JP2010064008A - Bucket type jaw crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bucket type jaw crusher easy in exchange of a hydraulic motor due to breakage of the hydraulic motor or change of crushing capacity, change of size, and exchange of a coupling stem; shortening crushing size adjustment time by quickly and easily exchanging toggle plate parts; allowing quick exchanging by integrally building-in an eccentric main spindle and parts around a jaw moving blade in a bucket; and allowing quick and easy clogging removal of crushed matter. <P>SOLUTION: The bucket type jaw crusher is provided with a coupling of spline engagement and the coupling stem for connection of the hydraulic motor 70 driving the jaw moving blade 30 to the eccentric main spindle 40, and is constituted to allow taking out of eccentric main spindle parts, toggle plate parts and jaw moving blade parts from a bucket opening, and allowing the jaw moving blade 30 and a jaw fixed blade 20 to be formed in a reversed truncated chevron pattern. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention mainly relates to an improvement of a bucket-type jaw crusher used for processing waste materials such as waste concrete, waste building materials, and waste pavement materials.

Conventionally, as shown in FIG. 8-2, the eccentric main shaft 40 and the driving hydraulic motor 60 shaft are connected by directly connecting the spline hole of the hydraulic motor to the spline portion 413 at the shaft end of the eccentric main shaft. If the spline section is damaged, the entire eccentric spindle must be replaced.Also, when replacing the hydraulic motor with a larger one, if the spline section does not fit, the entire eccentric spindle must be replaced. There was a drawback that the pause time was long.
In addition, as shown in FIG. 8A, the conventional tension rod 551 is provided with kamaboko type washers 571 and 581 on the seats of the tension rod 551 and the spring 56 so as to follow the increase and decrease of the inclination of the tension rod. However, since the load is in line contact, the kamaboko type washer has a drawback of low durability.
In addition, the conventional crushing size adjusting plate 54 is bolted to the upper bolts 16 of the bucket by passing bolts through the bolt holes at both ends of the plurality of stacked adjusting plates. In addition, since a long bolt and a large number of adjusting plates are handled, it takes time to remove and attach the bolts and to insert and remove the adjusting plates.
In addition, the fixed load receiver 53 of the conventional toggle plate 51 is supported by the tension rod 551 and the spring 56 in contact with the toggle plate. However, the toggle plate is changed by the change in the direction and posture of the bucket and the impact of the work. When moved, there was a drawback that the load receiver dropped off.
In addition, the conventional eccentric main shaft 40 is assembled by a large assembly of the eccentric main shaft 40, the jaw moving teeth 30, the jaw moving tooth frame 32, the eccentric bearing 411, and the counterweight 42, the bracket 13 is bolted, and the top of the bucket 10 is fixed. Although loading and unloading were performed from the plate 16 portion, there was a drawback that when the bracket 13 was tightened with bolts, the weight increased and assembly took time.
Therefore, the inventor fits a coupling 414 or 414B having a spline hole 4141 or 4141B or 4142B to the shaft end of the eccentric main shaft 40 as shown in FIGS. Engage the joint shaft 415 or 415B with splines that engage with the spline holes of the hydraulic motor on both sides to replace the joint shaft when the spline hole of the hydraulic motor is changed, or replace the joint shaft due to damage to the joint shaft I did it.
Further, as shown in FIGS. 2-4 and 2-5, the inventor engages a coupling 414C or 414D having a spline hole 4141C or 4142D that engages with the spline shaft 712C or 712D of the hydraulic motor 70. The coupling can be changed according to the change of the spline shaft of the hydraulic motor.
As shown in FIG. 3, the seat of the tension rod 61 and the spring 66 is provided with a rotation bearing 64 in a perpendicular direction on the jaw moving tooth side of the tension rod, and the jaw moving tooth is interposed via the pin 63 and the pin 631. The spring 32 is rotatably supported by a bearing base 632 of the frame 32, and the spring side is screwed into a pipe nut 62 that abuts on a spring 66 in a spring box 67 pivotally supported by a fixed seat 68, and the opening 17 is formed. If the adjustment is made, the amount of expansion and contraction of the tension rod accompanying the increase and decrease of the adjustment plate can be absorbed and the increase and decrease of the inclination can be followed.
Further, as shown in FIGS. 4-1 to 4-4, the crushing size adjusting plate 54 and the fixing plate 56 are provided with U-shaped bolt holes 541 and 561 whose openings face outward, and the fixing plate 56 The swinging piece 57 having a U-shaped bolt hole 571 facing in one direction is inserted into the bolt hole 561, the mounting bolt 55 is inserted, and the adjusting plate is fixed. The opening of the U-shaped bolt hole of the swing piece is made to coincide with the U-shaped hole of the fixing plate so that the mounting bolt can be easily removed and attached, and the adjustment plate can be inserted and removed through the opening 18 in a short time. Successful.
Further, as shown in FIG. 5, the fixed load receiver 53 of the toggle plate 51 is provided with a bracket 5401 on the adjustment plate 54 and screw jacks 542 and 543 on the bracket to support both ends of the fixed load receiver and drop off. Succeeded in preventing.
Further, as shown in FIGS. 6A to 6C, the eccentric main shaft 40 is assembled in advance by the jaw moving teeth 30, the jaw moving tooth frame 32, the eccentric main shaft 40, the eccentric bearing 411, the counter weight 42, and the like. The U-shaped notch groove 1401 opened to the inlet 15 side of the bucket 10 is provided so that the shaft ends of the eccentric main shaft can pass through the both side plates 14 and both main bearing seats 141 of the bucket. As a result, the eccentric main shaft assembled integrally was inserted (removed) into the bucket via the notch groove, and it was possible to perform quick and reliable assembly.
Japanese Patent Application No. 2007-227404

The present invention provides a bucket-type jaw crusher that can easily replace the hydraulic motor, change the size, and replace the joint shaft due to breakage of the hydraulic motor or change in crushing ability.
The present invention also provides a bucket-type jaw crusher in which toggle plate parts can be exchanged quickly and easily and the crushing size can be adjusted in a short time.
The present invention also provides a bucket-type jaw crusher in which parts around the eccentric main shaft and the jaw moving teeth are integrated into a bucket and can be quickly replaced.
Furthermore, the present invention provides a bucket-type jaw crusher that can be quickly removed when an object to be crushed becomes jammed between the jaw moving teeth and the jaw fixed teeth.

In order to achieve the above-mentioned object, the bucket-type jaw crusher of the present invention has a jaw fixing tooth 20 on the inner surface of the bottom 11 of the bucket 10 as shown in the figure, and is opposed to the upper portion of the hydraulic motor. The object to be crushed 100 can be crushed by the jaw moving teeth 30 which are pivotally supported on the eccentric main shaft 40 driven by 70, supported at the bottom by the toggle plate 51, and arranged in an inverted octagonal shape with the jaw fixed teeth 20. In the bucket-type jaw crusher attached to the arm 2 of the excavator 1, the eccentric main shaft 40 connected to the hydraulic motor 70 is connected via the spline-engaged joint shafts 415 and 415B or the drive shafts 71C and 71D. is there.
In order to achieve the above object, the bucket type jaw crusher according to the second aspect of the present invention has a spline-engaged joint shaft 415, which is a shaft of the eccentric main shaft 40, as shown in FIG. One having a coupling 414 with a spline hole 4141 fitted to the end 413, a spline 4151 engaging with the spline hole 4141 on one side, and a spline 4152 engaging with the spline hole 711 of the hydraulic motor 70 on the other side Therefore, the joint shaft can be easily replaced when the spline hole of the hydraulic motor is changed, and the joint shaft can be easily replaced when the joint shaft is damaged.
Further, in order to achieve the above object, the bucket type jaw crusher of the present invention has a spline-engaged joint shaft 415B, which is a shaft of the eccentric main shaft 40B. A spline that has a coupling 414B having two spline holes 4141B and 4142B engaged with the end 413B and a spline 4151B that engages with the spline hole 4142B on one side and that engages with the spline hole 711B of the hydraulic motor 70 on the other side 4152B is provided so that the joint shaft can be easily replaced when the hydraulic motor spline hole is changed, and the joint shaft or coupling can be easily replaced due to the joint shaft or coupling being damaged.
Further, in order to achieve the above object, the bucket type jaw crusher of the present invention has a spline-engaged drive shaft 71 </ b> C that is connected to the spline of the hydraulic motor 70. The shaft 712C and a coupling 414C with a spline hole 4141C that engages with the spline shaft 712C are fitted to the shaft end 413C of the eccentric main shaft 40C, so that the hydraulic motor can be easily replaced. .
Further, in order to achieve the above object, the bucket type jaw crusher according to the fifth aspect of the present invention has a spline-engaged drive shaft 71D as shown in the first aspect of the invention. A coupling 414D having a shaft 712D, a spline hole 4142D engaged with the spline shaft 712D, and a spline hole 4141D engaged with the spline shaft 4131D of the shaft end 413D of the eccentric main shaft 40D is formed on the shaft end 413D of the eccentric main shaft 40D. It is made up of engaged parts, so that the exchange of the coupling accompanying the change of the spline shaft of the hydraulic motor and the exchange of the coupling due to the breakage of the coupling can be easily performed.
Further, in order to achieve the above object, the bucket type jaw crusher according to the sixth aspect of the present invention provides a moving tooth of the toggle plate 51 as shown in the first, second, third, fourth or fifth aspect of the present invention. A tensioning device 60 formed with a tension rod 61 and a spring 66 is provided so that the side load receiver 52 and the fixed side load receiver 53 can always come into close contact with the load surfaces 511 and 512 of the toggle plate 51. A rotating bearing 64 provided with a bearing 641 on the tooth side is provided, and is rotatably supported on the bearing base 632 of the jaw moving tooth frame 32 via the pin 63 and the pin 631, and the opposite side is rotated to the fixed seat 68. The durability of the load receiver is improved by screwing into a pipe nut 62 provided with a female thread 621 in a pipe-like part that contacts the spring 66 of the spring box 67 that is pivotally supported. Causes, is obtained by allowing follow the increase or decrease in the tension rod inclination.
According to a seventh aspect of the present invention, the bucket-type jaw crusher adjusts the crushing size as shown in the first, second, third, fourth, fifth or sixth aspect of the invention. U-shaped bolt holes 541 with open ends on the end face side are provided at both ends of the plate 54, and U-shaped with open ends in the same direction as the U-shaped bolt holes 541 of the adjusting plate 54 on the fixing plate 56 of the mounting bolt 55. The bolt hole 561 is provided with a swinging piece 57 having a U-shaped cutout groove 571. The mounting bolt 55 is loosened so that the cutout groove 571 of the swinging piece 57 is connected to the U of the fixing plate 56. The mounting bolt 55 is removed in accordance with the letter-shaped hole 561, the mounting is facilitated, and the adjustment plate can be quickly inserted and removed.
In order to achieve the above object, the bucket-type jaw crusher of the present invention has a crushing size as shown in the invention of claim 1, 2, 3, 4, 5, 6 or 7. The adjustment plate 54 is provided with brackets 5401 for supporting both ends of the fixed load receiver 53, and the screw jacks 542 and 543 of the round rods provided on the bracket 5401 can prevent the fixed load receiver from falling off. is there.
Furthermore, the invention of claim 9 of the bucket type jaw crusher of the present invention is to achieve the above-mentioned object, as shown in the invention of claim 1, 2, 3, 4, 5, 6, 7 or 8. The U-shaped notch groove 1401 through which the shaft portion 413 of the eccentric main shaft 40 can pass is provided in the both side plates 14 and both main bearing seats 141 of the bucket 10 so as to open to the bucket inlet 15 side. The tooth frame 32, the eccentric main shaft 40, the eccentric bearing 411, and the counterweight 42 are assembled and integrated into the bucket 10 through the notch groove 1401 and removed, and the fitting provided in the mounting portion 4121 of the main bearing box 412 is installed. The portion 4122 is fitted into the fitting portion 1411 provided on the main bearing seat 141 so that the assembly and positioning can be performed quickly and reliably.
In the present invention, the spline of the eccentric main shaft and the joint shaft may use a combination of a key and a key groove, or a combination of a square shaft and a square hole.

The bucket type jaw crusher of the present invention has a coupling with a spline hole fitted to the end of the eccentric main shaft, and engages a coupling shaft having splines respectively engaged with the coupling and the spline hole of the hydraulic motor. The joint shafts of splines with different sizes accompanying the change of the spline hole of the hydraulic motor and the joint shaft replacement due to damage to the joint shaft can be performed quickly.
In the bucket type jaw crusher of the present invention, a coupling having a spline hole that engages with the spline shaft of the hydraulic motor is fitted to the end of the eccentric main shaft, and the coupling can be changed in accordance with the change of the spline shaft of the hydraulic motor. I was able to do it.
Moreover, the bucket type jaw crusher of the present invention uses a load contact with a line contact by a kamaboko type receiving seat for the conventional tension rod, but has a surface contact rotary bearing, so it has improved durability. .
In addition, the crushing size adjustment plate is provided with a combination of a U-shaped bolt hole and a swinging piece with a U-shaped groove. By simply loosening the nut, it is easy to remove and install the mounting bolt, and the adjustment plate can be easily inserted and removed. You can do it in time.
Further, both ends of the fixed load receiver of the toggle plate are provided with screw jacks to support the change in the direction and posture of the bucket and the impact of the work, so that the fixed load receiver can be prevented from falling off.
Further, the parts around the eccentric main shaft and the jaw moving teeth are integrally assembled in advance and inserted into the bucket through the U-shaped notch groove provided in the bucket side plate and the main bearing seat, so that quick assembly is possible.
Further, when a crushed material is clogged between the jaw moving teeth and the jaw fixed teeth, it can be easily and quickly removed by simply inverting the jaw moving teeth in an eight-letter shape.

  The embodiment of the present invention is shown in FIGS. 1 to 7-3.

An embodiment of the present invention is shown in FIGS.
The bucket type jaw crusher of the embodiment of the present invention includes a jaw fixing tooth 20, a jaw moving tooth 30, an eccentric main shaft 40, a toggle plate portion 50, and a tension device 60.
The jaw fixing teeth 20 form a plurality of corrugated teeth 21 on the front side and are fixed to the inner surface of the bottom 11 of the bucket 10.
The jaw moving teeth 30 are formed on the front side with wave-like teeth 31 that are meshed with the wave-like teeth 21 of the jaw fixed teeth 20, and the upper portion is pivotally supported by the eccentric main shaft 40 via a pair of eccentric bearings 411. It is supported by the toggle plate 51 via the side load receiver 52 and is arranged in an inverted octagonal shape so as to face the jaw fixed teeth 20.
As shown in FIG. 2A, the eccentric main shaft 40 passes through the left and right side plates 14, 14 of the bucket 10 and is directly driven by a hydraulic motor 70 provided on the outer side of one side plate 14, and on the outer side of the other side plate 14. A flywheel 80 is provided, and a counterweight 42 for adjusting the balance of the eccentric part is provided in the middle part.
As shown in FIG. 2B, the eccentric main shaft 40 is fitted with a coupling 414 having a spline hole 4141 at a shaft end 413, and a spline 4151 engaged with the coupling 414 and a spline hole 711 of the hydraulic motor 70. A joint shaft 415 having a spline 4152 that engages with the shaft is engaged and driven by the hydraulic motor 70.
Further, as shown in FIG. 2-3, the eccentric main shaft 40B includes a spline 4151B engaging a coupling 414B having spline holes 4141B and 4142B at a shaft end 413B, and a spline 4151B engaging with the coupling 414B. The joint shaft 415B having the spline 4152B that engages with the spline hole 711B of the hydraulic motor 70 may be engaged.
Further, as shown in FIG. 2-4, the eccentric main shaft 40C is fitted with a coupling 414C having a spline hole 4141C that engages with the spline shaft 712C of the hydraulic motor at the shaft end 413C, and the spline shaft 712C of the hydraulic motor. May be engaged.
As shown in FIG. 2-5, the eccentric main shaft 40D includes a spline hole 4141D that engages with the spline 4131D at the shaft end and a spline hole 4142D that engages with the spline shaft 712D of the hydraulic motor 70, as shown in FIG. Further, the coupling 414D may be engaged with the spline shaft 4131D and the spline shaft 712D of the hydraulic motor 70 may be engaged.
The toggle plate portion 50 includes a toggle plate 51, a moving tooth side load receiver 52, a fixed side load receiver 53, and an adjustment plate 54.
As shown in FIG. 1, the toggle plate 51 is provided with load surfaces 511 and 512 having convex arcuate sections at the upper and lower ends, and the load surfaces 511 and 512 are respectively provided with a moving tooth side load receiver 52 and a fixed side. The load receiver 53 is in contact.
The lower surface of the moving tooth side load receiver 52 is formed in a concave arc shape, abuts against the load surface 511 at the upper end of the toggle plate 51, and the upper surface is fixed to the lower end of the jaw moving tooth 30 via the receiving fixture 521. ing.
The fixed-side load receiver 53 has an upper surface formed in a concave arcuate shape, abuts against the load surface 512 at the lower end of the toggle plate 51, and the lower surface receives and fixes the upper plate 16 of the bucket 10 with the adjustment plate 54 interposed therebetween. It is fixed via 531.
The toggle plate 51 abuts the load surface 511 at the upper end against the moving tooth side load receiver 52 and abuts the load surface 512 at the lower end against the fixed load receiver 53 so that the abutment portion is not detached by the tension device 60 described later. The jaw moving teeth that are kept in close contact and are reciprocated up and down by the rotation of the eccentric main shaft 40 by attaching the upper end 511 of the toggle plate 51 to the eccentric main shaft 40 side from the orthogonal surface of the jaw moving tooth frame 32 so as to be inclined upward. 30 is operated so as to be pressed against the jaw fixed teeth 20 while being pressed down with the object 100 to be crushed.
As shown in FIG. 4A to FIG. 4C and FIG. 5, the adjustment plate 54 is provided with U-shaped bolt holes 541 with openings facing outward at both ends, and U-shaped bolts opening in one direction. It is fixed to a fixing plate 56 sandwiching a swinging piece 57 provided with a hole 571 with a mounting bolt 55.
The fixing plate 56 is also provided with a U-shaped bolt hole 561 whose opening is directed outward, and the swing piece 57 is rotated so that the opening of the bolt hole 571 is aligned with the opening of the bolt hole 561 of the fixing plate 56. The fitting bolt 55 can be easily removed and attached by matching.
The tensioning device 60 includes a tension rod 61, a receiving seat 69, and a spring box 67.
As shown in FIG. 3, the tension rod 61 is provided with a rotational bearing 64 on the jaw moving tooth side so as to be orthogonal to the tension rod 61, and is attached to a receiving seat 69 of the jaw moving tooth frame 32 through a pin 63 to be fitted. Further, it is rotatably supported on a bearing stand 632 via a pin 631, and the spring side is connected to a spring 66 in a spring box 67, which will be described later, via a pipe nut 62 provided with a female thread 621 in a part of a pipe shape. It is in contact.
The receiving seat 69 receives the load of the rotary bearing 64 of the tension rod 61 by the pin 63, and further receives the load by the bearing base 632 by the pin 631 and is supported by the jaw moving tooth frame 32.
The spring box 67 is provided with pins 671 on both outer sides, and is pivotally attached to a fixed seat 68. The fixed seat 68 is fixed to a bracket 161 protruding from the upper plate 16 of the bucket 10 and is built in the spring box 67. The seat plate 65 and the pipe nut 62 are in contact with the spring 66, and the pipe nut 62 is screwed to the tension rod 61.
Therefore, in order to increase / decrease the inclination of the tension rod 61 due to the reciprocating movement of the jaw moving teeth 30 and increase / decrease the inclination of the tension rod 61 due to the insertion / removal of the size adjusting plate 54, the rotation of the pin 63 of the rotation bearing 64 and the spring box 67. The pin 671 is rotated so that the pin 671 can follow the pin 631 and the spring 66 are bent.
When the eccentric main shaft 40 and the jaw moving teeth 30 are assembled in the bucket 10, as shown in FIG. 6-2, a counterweight 42 is attached to the middle portion of the eccentric main shaft 40, and through eccentric bearings 411 and 411 attached on the left and right sides thereof. As shown in FIGS. 6A and 6B, the jaw moving tooth frame 32, the jaw moving tooth 30 and the like are assembled and opened to the bucket inlet 15 side provided on the both side plates 14 of the bucket 10 and the two main bearing seats 141. The shaft ends 413 of the eccentric main shaft 40 assembled integrally with the U-shaped notch groove 1401 are inserted into the main bearing seat 141, and the fitting portion 4122 of the main bearing box 412 and the fitting portion 1411 of the main bearing seat are inserted. As soon as they are fitted, they can be assembled and positioned quickly. Accordingly, when the bucket type jaw crusher is attached to the hydraulic excavator 1, the shaft hole 131 of the bracket 13 of the bucket 10 is replaced with the pin hole 7 at the tip of the arm 2 of the hydraulic excavator 1, as shown in FIG. The other shaft hole 132 is axially attached to the rod 4 of the bucket cylinder 3 via the H-shaped link 6, and the object to be crushed 100 is first placed with the inlet 15 of the bucket 10 facing the object to be crushed 100. Next, as shown in FIG. 7-2, the bucket 10 is moved upward, moved to a place where the crushed objects 100 are accumulated, the hydraulic motor 70 is driven, and the jaw moving teeth 30 are operated. Then, the object to be crushed 100 is crushed 101 and discharged from the discharge port 12 at the lower end of the bucket 10.
When the object to be crushed 100 is clogged between the jaw moving teeth 30 and the fixed teeth 20, as shown in FIG. 7-3, the bucket inlet 15 is directed downward and the hydraulic motor 70 is rotated in reverse to rotate the jaws. If the gap between the moving tooth 30 and the fixed tooth 20 is opened, the clogging can be removed.

  The bucket type jaw crusher of the present invention can be mass-produced with a small size and light weight, and can be easily attached to a hydraulic excavator.

It is explanatory drawing which shows the cross section of this invention Example. It is explanatory drawing seen from the opening part of FIG. It is explanatory drawing which shows another use condition of the shaft end of FIGS. It is explanatory drawing which shows another use condition of the shaft end of FIGS. It is explanatory drawing which shows another use condition of the shaft end of FIGS. It is explanatory drawing which shows another use condition of the shaft end of FIGS. It is explanatory drawing which shows the cross section of the tension rod of FIG. It is a front view of the adjustment board of FIG. It is explanatory drawing which looked at the stationary plate of FIG. It is explanatory drawing which looked at the rocking | fluctuation piece of FIGS. 4-1 from the downward direction. It is a perspective view of the fixed side load receiver of FIG. 4-1. It is explanatory drawing which shows the assembly state of FIG. It is explanatory drawing which shows the assembly state of the eccentric main axis | shaft of FIGS. It is explanatory drawing which shows the AA line cross section of the main bearing seat of FIGS. It is explanatory drawing which shows the use condition of FIG. It is explanatory drawing which shows another use condition of FIG. It is explanatory drawing which shows another use condition of FIG. It is explanatory drawing which shows the cross section of the conventional bucket type jaw crusher. It is explanatory drawing seen from the opening part of FIGS.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bucket 11 Bucket bottom 14 Bucket side plate 141 Main bearing seat 1401 U-shaped notch groove 1411, 4122 Engagement part 15 Inlet 17, 18 Opening part 20 Jaw fixed tooth 30 Jaw moving tooth 40, 41B, 41C, 41D Eccentric main shaft 411 Eccentric bearing 412 Main bearing box 4121 Mounting portion 413, 413B, 413C, 413D Shaft end 4131B, 4131D Spline shaft 414, 414B, 414C, 414D Coupling 4141, 4141B, 4142B, 4141C, 4141D, 4142D Spline hole 415, 415B Joint Shaft 4151, 4151B, 4152, 4152B Spline shaft 42 Counterweight 51 Toggle plate 511, 512 Toggle plate load surface 52, 53 Load receiver 521, 531 Fixing fixture 54 Adjustment plate 541, 561 U-shaped bolt hole 5401 Bracket 542, 543 Screw jack 55 Mounting bolt 56 Fixing plate 57 Oscillating piece 571 U-shaped notch groove 60 Tension device 61 Tension rod 62 Pipe nut 621 Female screw 63, 631 Pin 632 Bearing stand 64 Rotating bearing 641 Bearing 66 Spring 67 Spring box 68 Fixed seat 70 Hydraulic motor 71C, 71D Drive shaft 711, 711B Hydraulic motor spline shaft 712C, 712D Hydraulic motor spline shaft 80 Flywheel 100 Object to be crushed

Claims (9)

  The jaw fixing teeth 20 are provided on the inner surface of the bottom 11 of the bucket 10, the upper part is supported by an eccentric main shaft 40 driven by a hydraulic motor 70, and the lower part is supported by a toggle plate 51. In the bucket-type jaw crusher attached to the arm 2 of the excavator 1 so that the object 100 to be crushed can be crushed by the jaw moving teeth 30 provided in an inverted octagonal shape, the eccentric main shaft 40 connected to the hydraulic motor 70 is A bucket-type jaw crusher characterized in that it is connected via spline-engaged joint shafts 415 and 415B or drive shafts 71C and 71D.   The spline-engaged joint shaft 415 has a coupling 414 with a spline hole 4141 fitted to the shaft end 413 of the eccentric main shaft 40 and a spline 4151 that engages with the spline hole 4141 on one side, and the other side is hydraulic. It has a spline 4152 that engages with the spline hole 711 of the motor 70 so that the joint shaft can be easily replaced due to the change of the spline hole of the hydraulic motor, or the joint shaft can be replaced due to damage to the joint shaft. The bucket type jaw crusher according to claim 1, wherein   The joint shaft 415B engaged with the spline has a coupling 414B having two spline holes 4141B and 4142B engaged with the shaft end 413B of the eccentric main shaft 40B, and a spline 4151B engaged with the spline hole 4142B on one side. And a spline 4152B that engages with the spline hole 711B of the hydraulic motor 70 on the other side. Replacement of the joint shaft accompanying the change of the spline hole of the hydraulic motor, or the joint shaft or the coupling shaft due to breakage of the joint shaft or coupling. 2. A bucket type jaw crusher according to claim 1, wherein the coupling can be easily replaced.   The spline-engaged drive shaft 71C is obtained by fitting the spline shaft 712C of the hydraulic motor 70 and the coupling 414C with the spline hole 4141C that engages with the spline shaft 712C to the shaft end 413C of the eccentric main shaft 40C. The bucket type jaw crusher according to claim 1, wherein the hydraulic motor can be easily replaced.   The spline-engaged drive shaft 71D includes a spline shaft 712D of the hydraulic motor 70, a spline hole 4142D that engages with the spline shaft 712D, and a spline hole 4141D that engages with the spline shaft 4131D of the shaft end 413D of the eccentric main shaft 40D. Coupling 414D provided with the shaft end 413D of the eccentric main shaft 40D is engaged, and it is easy to replace the coupling due to the change of the spline shaft of the hydraulic motor or to replace the coupling due to damage of the coupling The bucket-type jaw crusher according to claim 1, wherein the bucket-type jaw crusher is configured to be capable of.   A tensioning device 60 formed with a tension rod 61 and a spring 66 is provided so that the moving tooth side load receiver 52 and the fixed side load receiver 53 of the toggle plate 51 can always be in close contact with the load surfaces 511 and 512 of the toggle plate 51. , A rotating bearing 64 provided with a bearing 641 is provided on the jaw moving tooth side of the tension rod 61, and is rotatably supported on the bearing base 632 of the jaw moving tooth frame 32 via the pin 63 and the pin 631. The load receiver is improved in durability by being screwed into a pipe nut 62 provided with a female screw 621 in a pipe-like part that contacts the spring 66 of the spring box 67 pivotally supported by the fixed seat 68. Further, if the adjustment is made through the opening 17, it is possible to follow the increase / decrease of the inclination of the tension rod accompanying the increase / decrease of the adjustment plate. , 2, 3, 4 or 5 bucket jaw crusher according.   U-shaped bolt holes 541 with open ends on the end face side are provided at both ends of the crushing size adjustment plate 54, and the tips are attached to the fixing plate 56 of the mounting bolt 55 in the same direction as the U-shaped bolt holes 541 of the adjustment plate 54. An open U-shaped bolt hole 561 is provided, and a swing piece 57 having a U-shaped notch groove 571 is provided in the bolt hole 561. The mounting bolt 55 is loosened to fix the notch groove 571 of the swing piece 57. The mounting bolt 55 can be easily removed and attached through the opening 18 so as to coincide with the U-shaped hole 561 of the plate 56, and the adjustment plate can be quickly inserted and removed. The bucket-type jaw crusher according to 2, 3, 4, 5 or 6.   A bracket 5401 for supporting both ends of the fixed load receiver 53 is provided on the crushing size adjustment plate 54, and the screw jacks 542 and 543 of the round rods provided on the bracket 5401 can prevent the fixed load receiver from falling off. The bucket type jaw crusher according to claim 1, 2, 3, 4, 5, 6 or 7.   A U-shaped notch groove 1401 through which the shaft portion 413 of the eccentric main shaft 40 can pass is provided on both side plates 14 and both main bearing seats 141 of the bucket 10 so as to open to the bucket inlet 15 side. The frame 32, the eccentric main shaft 40, the eccentric bearing 411, and the counterweight 42 are assembled and integrated into the bucket 10 through the notch groove 1401 and removed, and the fitting portion provided in the mounting portion 4121 of the main bearing box 412 4122 is fitted into a fitting portion 1411 provided in a main bearing seat 141 so that assembly and positioning can be performed quickly and reliably. The bucket type jaw crusher described.

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